accuracy—Degree of conformity with a standard or accepted value. Accuracy relates to the quality of a result, and is distinguished from precision which relates to the quality of the operation by which the result is obtained.

accuracy checking—The procurement of presumptive evidence of a map’s compliance with specified accuracy standards. Accuracy checking gen­erally indicates the relative (rather than the absolute) accuracy of map features. See also Appendix C: National Standard for Spatial Data Accuracy.

accuracy standards—Accuracy standards issued in 1998 by the Federal Geodetic Control Subcommittee (FGCS) to re­place the accuracy standards issued in 1984 and 1988 by the FGCC (Federal Geodetic Control Committee). Accura­cies should be calculated separately for horizontal, ellipsoid, and orthometric height components according to the table above. Note that although the largest entry in the table is 10 meters, accuracy standards can be expanded to larger numbers as needed.

accuracy testing—The procurement of confirmed evidence, on a sampling basis, of a map’s compliance with specified accuracy standards. Accuracy testing is designed to indicate both the relative and absolute accuracy of map features. See also Appendix C: National Standard for Spatial Data Accuracy.
–

Source: NSPS “Definitions of Surveying and Associated Terms“, used with permission.

Part of LearnCST’s exam text bundle.